drm/i915: Support 64b execbuf
Previously, our code only had a 32b offset value for where the
batchbuffer starts. With full PPGTT, and 64b canonical GPU address
space, that is an insufficient value. The code to expand is pretty
straight forward, and only one platform needs to do anything with the
extra bits.
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Rafael Barbalho <rafael.barbalho@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index e0c7bf2..40a7aa4 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1210,7 +1210,7 @@
static int
i965_dispatch_execbuffer(struct intel_ring_buffer *ring,
- u32 offset, u32 length,
+ u64 offset, u32 length,
unsigned flags)
{
int ret;
@@ -1233,7 +1233,7 @@
#define I830_BATCH_LIMIT (256*1024)
static int
i830_dispatch_execbuffer(struct intel_ring_buffer *ring,
- u32 offset, u32 len,
+ u64 offset, u32 len,
unsigned flags)
{
int ret;
@@ -1284,7 +1284,7 @@
static int
i915_dispatch_execbuffer(struct intel_ring_buffer *ring,
- u32 offset, u32 len,
+ u64 offset, u32 len,
unsigned flags)
{
int ret;
@@ -1797,7 +1797,7 @@
static int
gen8_ring_dispatch_execbuffer(struct intel_ring_buffer *ring,
- u32 offset, u32 len,
+ u64 offset, u32 len,
unsigned flags)
{
struct drm_i915_private *dev_priv = ring->dev->dev_private;
@@ -1811,8 +1811,8 @@
/* FIXME(BDW): Address space and security selectors. */
intel_ring_emit(ring, MI_BATCH_BUFFER_START_GEN8 | (ppgtt<<8));
- intel_ring_emit(ring, offset);
- intel_ring_emit(ring, 0);
+ intel_ring_emit(ring, lower_32_bits(offset));
+ intel_ring_emit(ring, upper_32_bits(offset));
intel_ring_emit(ring, MI_NOOP);
intel_ring_advance(ring);
@@ -1821,7 +1821,7 @@
static int
hsw_ring_dispatch_execbuffer(struct intel_ring_buffer *ring,
- u32 offset, u32 len,
+ u64 offset, u32 len,
unsigned flags)
{
int ret;
@@ -1842,7 +1842,7 @@
static int
gen6_ring_dispatch_execbuffer(struct intel_ring_buffer *ring,
- u32 offset, u32 len,
+ u64 offset, u32 len,
unsigned flags)
{
int ret;